Eosinophilia

Abstract:
Eosinophilia occurs when the eosinophil count is over x 109/L. It is typically observed in parasitic infections and allergies. However, it can also occur in carcinomas or chronic, inflammatory processes.

Clinical picture:
Eosinophilia is not a disease. The clinical picture is dependent on the underlying disease. Eosinophilia is rarely primary (neoplastic) in nature. Cases in which values of  > 1.5 x 109/L persist, and a cause cannot be established, are refered to as idiopathic eosinophilia syndromes.

Hematology:
Eosinophilia is usually mild. However, under certain circumstances it can become quite marked and achieve values of 20 - 40 x 109/L. Eosinophilia is often present in chronic myelocytic leukemia.


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